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If x and y are positive, is 3x > 7y? (1) x > y + 4 (2)

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VP
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If x and y are positive, is 3x > 7y? (1) x > y + 4 (2) [#permalink] New post 16 Aug 2004, 20:28
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If x and y are positive, is 3x > 7y?
(1) x > y + 4
(2) -5x < -14y


Please explain, thank you
Senior Manager
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 [#permalink] New post 16 Aug 2004, 21:21
B.

Provided is X > 2 1/3 Y

1) tells us that X > 4 + Y, this is insufficient
consider x = 5, y = 1 and x = 100, y = 96.

2) tells us X > 2 4/5 Y

If 2) is true, then we can definitively answer the question.

B.
VP
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Joined: 26 Apr 2004
Posts: 1226
Location: Taiwan
Followers: 2

Kudos [?]: 61 [0], given: 0

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 [#permalink] New post 17 Aug 2004, 08:01
SigEpUCI, I can figure out.

thanks.
  [#permalink] 17 Aug 2004, 08:01
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If x and y are positive, is 3x > 7y? (1) x > y + 4 (2)

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